I always am amused at military communication jargon from WW-2 , as well. I had a friend I made at the Spring National M/L shoot about 1987. He was on a PT boat in the Pacific , that went out at times , in the same squadron as John F. Kennedy. My friend said the Japanese were very good at sending bogus messages , and disrupting military Naval communications . To confuse the Japanese communications , my friend said US Naval operators used American slang as a signal that a message really came from an American source. One of the slang terms used back then , was to make a true comm. statement , and to follow it with , "And that's No $hit". Guess the enemy had no translation for the term.